Virendra Jethra
2025
McMaster at LeWiDi-2025: Demographic-Aware RoBERTa
Aadi Sanghani
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Sarvin Azadi
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Virendra Jethra
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Charles Welch
Proceedings of the The 4th Workshop on Perspectivist Approaches to NLP
We present our submission to the Learning With Disagreements (LeWiDi) 2025 shared task. Our team implemented a variety of BERT-based models that encode annotator meta-data in combination with text to predict soft-label distributions and individual annotator labels. We show across four tasks that a combination of demographic factors leads to improved performance, however through ablations across all demographic variables we find that in some cases, a single variable performs best. Our approach placed 4th in the overall competition.